Calcium
More than bones: calcium regulates your heartbeat, muscles, and nerves.
~44% of the US population does not meet calcium requirements from food alone
Why it matters for longevity
Calcium is the most abundant mineral in the body, essential for bone density, muscle contraction, nerve signaling, and blood clotting. Adequate calcium intake throughout life reduces osteoporosis risk. However, excessive supplementation without adequate K2 and magnesium may increase arterial calcification risk. The key is getting calcium from food sources and maintaining the cofactor balance.
How much you need
1,000mg for adults 19-50, 1,200mg for women over 50 and adults over 70
Longevity researchers suggest 1,000-1,200mg from food sources, paired with vitamin D, K2, and magnesium for proper utilization.
Signs you might be low
- Muscle cramps, especially at night
- Brittle nails
- Numbness or tingling in fingers
- Dental problems
Best food sources
Key research
Bolland MJ et al. (2015). Calcium intake and risk of fracture: systematic review. BMJ, 351, h4580.
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